... Monitoring a region around the center of our Galaxy, astronomers have indeed found evidence for a surprisingly large number.. ... First Launch of the Delta IV Heavy . ... The Delta IV Heavy is capable of launching over 23,000 kilograms into low Earth orbit. NGC 6946: The Fireworks Galaxy . ... Methane rain, evaporating lakes, flowing rivers, and water ice-volcanoes all likely exist on Saturn's moon Titan, according to preliminary analyses of recent images taken by the successful Huygen's lander. ...